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    • 8. 发明申请
    • IMPROVED METHOD FOR ISOMERISATION OF HOP ALPHA-ACIDS TO ISO-ALPHA-ACIDS
    • 用于将异丁烯酸酸化成ISO-ALPHA-ACIDS的改进方法
    • WO2012041994A1
    • 2012-04-05
    • PCT/EP2011/067055
    • 2011-09-29
    • KATHOLIEKE UNIVERSITEIT LEUVENDE VOS, DirkMERTENS, Pascal
    • DE VOS, DirkMERTENS, Pascal
    • C12C3/12
    • C12C3/12
    • The invention relates to a process for the production of iso-alpha-acids starting from alpha-acids in which an alpha-acid containing hop extract is mixed with a carbon-containing chemical compound with one or more functional groups containing a (basic) nitrogen atom with a lone pair (or mixtures thereof), either in solvent-free conditions or in the presence of solvents and preferably under an oxygen-free atmosphere. The resulting mixture is subjected to a temperature of at least 278 K for a time sufficient to effect the intended conversion of the alpha-acid reactant into the iso-alpha-acid product. The present invention further relates to iso-alpha-acid compositions obtained by said improved isomerisation process and to the use of said iso-alpha-acid compositions as bittering formulation and/or as source to obtain reduced or hydrogenated iso-alpha-acid compositions.
    • 本发明涉及从α-酸开始生产异α酸的方法,其中将含有α-酸的啤酒花提取物与含碳化合物与含有(碱)氮的一个或多个官能团混合 原子与一对(或其混合物),在无溶剂条件下或在溶剂存在下,优选在无氧气氛下。 将所得混合物经受至少278K的温度足以实现将α-酸反应物预期转化成异α酸产物的时间。 本发明还涉及通过所述改进的异构化方法获得的异-α酸组合物,以及所述异-α-酸组合物作为苦味制剂和/或来源以获得还原或氢化异-α酸组合物的用途。